package demo3;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: liangyuanzhang
 * Date: 2025-3-08
 * Time: 13:15
 */
public class UserNameException extends RuntimeException{
    public UserNameException(){
        super();
    }

    public UserNameException(String s){
        super(s);
    }
}
